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Despite there only being three pieces of the track, the train doesn't derail because the arm keeps moving the track to continue the path

After using the bigger pieces, the arm starts to form a path with the smaller size tracks and then even packs away the other track

Christian said the robotic arms is fully automated but the tracks have to stay in the same place

The arm places the carriage on the new smaller loop and continues - but not before tidying up after itself and putting the bigger tracks away.

When the carriage comes to a stop, the arm picks it up and puts it away, before it packs the tracks up too.

It even counts up the pieces to make sure nothing is missed.

Explaining on his YouTube channel, Christian said: 'It's fully automated, but it relies on the tracks to stay at the same place.

'Basically I have eight fixed positions for each of the circles, where the robot can lay the tracks down. But since I don't have any sensors to check if they're actually at the right place, I need that box which always realigns the tracks after each cycle.'

One fan of the video posted: 'I like the counting of the parts at the very end. It looks cute, like he is concerned if everything is really in the box.'